The effects of changing solar activity on climate: contributions from palaeoclimatological studies

Engels, Stefan; Geel, B. van

doi:10.1051/swsc/2012009

Cited by 40 publications

(29 citation statements)

References 84 publications

(102 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Observed oscillations are highly similar to the cyclic signal of changes in total solar irradiance (TSI) with a periodicity of ∼ 11 years (Schwabe cycle) between a sunspot minimum and a sunspot maximum, measured instrumentally in the last 3 decades (Frohlich, 2006;Engels and van Geel, 2012) (Fig. 5).…”

Section: Resultssupporting

confidence: 62%

Decadal oscillations of the aquatic chemistry of river waters in Latvia

Porshnov

Kļaviņš

2016

Proc. IAHS

View full text Add to dashboard Cite

Abstract. Water quality changes of surface waters can be used to assess human impact intensity, but of importance is to consider also impacts of climate change/variability and naturally occurring changes of environmental quality. In Latvia, during the recent decades a major reduction of anthropogenic pressure has happened due to restructuring of economy and industrial production, resulting in major decrease of loading of many groups of pollutants. However, trends and driving factors for other groups of substances have not been much studied. Long term results of hydrochemical monitoring, performed in rivers of Latvia, are analysed during this study in connection with long-term sets of hydrological and heliophysical data, using standard statistical approaches. Our results indicate that variation of some hydrochemical values, for example COD and total Fe, show clearly visible decadal oscillated character, while variation of some other values, for example phosphate P and total P, show some individual characteristics of decadal oscillations. These results indicate the presence of a large scale, geochemical and geophysical significant process: multiannual pulse of catchment, driven by variation of solar irradiance through complex interactions between global atmospheric circulation, groundwater and surface waterbodies. The process described in our study is significant from a geochemical point of view and must be taken into account in prediction of water quality and quantity. Impacts of natural processes should be considered in the planning of environmental policy.

show abstract

Section: Resultssupporting

confidence: 62%

Decadal oscillations of the aquatic chemistry of river waters in Latvia

Porshnov

Kļaviņš

2016

Proc. IAHS

View full text Add to dashboard Cite

show abstract

“…The so-called "Little Ice Age" in the 17'th century was linked to the Maunder minimum in solar activity by [4]. Many later works have linked climate changes to changes in solar activity (see reviews [5,6]). …”

Section: Introductionmentioning

confidence: 99%

Reduced Solar Activity Disguises Global Temperature Rise

Stauning

2014

ACS

View full text Add to dashboard Cite

The question whether human activities seriously affect climate is asked with increasing voice these days. Quite understandable since the climate appears to be out of control with the significant global temperature increases already seen during the last three decades and with still heavier temperature increases to come in the future according to prognoses, among others, in the recent comprehensive IPCC reports

show abstract

“…a.C. si è verificato un raffreddamento climatico, causato dalla riduzione dell'attività solare, che, rispetto a quanto accade oggi (e a quanto accaduto nelle altre fasi calde dell'Olocene), dovette determinare la persistenza del fronte polare a latitudini più basse anche durante l'estate, con la conseguenza dell'instaurarsi di un clima più ventoso, più freddo e più umido. A livello di durata percentuale nel corso dell'anno, dovette quindi verificarsi nel Mediterraneo una maggior persistenza delle condizioni climatiche invernali e, di conseguenza, una minor durata di quelle estive (Harvey, 1980;O'Brien et al, 1995;Guerrero, 2006: 96-98;Engels, van Geel, 2012;van Geel, Ziegler, 2013: 432-436). Possiamo dunque ipotizzare che in quel periodo il regime dei venti di Bora abbia conosciuto in Adriatico una persistenza superiore rispetto a quanto accade oggi.…”

Section: L'incidenza Del Contesto Ambientaleunclassified

La navigazione tardo-arcaica in Adriatico. l’iconografia navale e la peculiarità della tradizione nautica / Late-archaic navigation in the Adriatic sea. the naval iconography and the peculiarity of the nautical tradition

Medas¹

2016

cupauam

View full text Add to dashboard Cite

RiassuntoLa navigazione nell'Adriatico in epoca arcaica, tra il IX e il VI sec. a.C., si caratterizza per una fitta rete di scambi e contatti interni, sia in senso est-ovest, tra le due coste, sia in senso nord-sud. Tale situazione, ben documentata a livello archeologico, trova riscontro in un piccolo nucleo di iconografie navali, databili tra il VII e il VI / inizi V sec. a.C. che presentano caratteristiche peculiari nel più ampio panorama dell'iconografia navale del Mediterraneo. Si riscontrano, infatti, tipologie navali specifiche in cui, al posto dei classici timoni laterali, compare per la prima volta un timone unico al centro della poppa, che anticipa una soluzione tecnica introdotta a livello generale solo nel Medioevo. In base al riscontro dell'iconografia, l'uso di questo timone rimane un fatto isolato al VII-VI secolo e al solo Adriatico centro-settentrionale.Parole chiave: Adriatico, navigazione arcaica, Prima Età del Ferro, iconografia navale, timone. AbstractAdriatic navigation in archaic period, between IX and VI century BC, is characterized by a dense network of inner exchanges and contacts, both in east-west direction, between both coasts, and in north-south direction. This situation is well reflected by archaeological findings and also by a small group of naval iconographies dated back between VII and VI / early V century BC, representing peculiar features inside the largest context of ancient Mediterranean naval iconography. It is recognized specific naval typologies with a central rudder instead of the classical ancient side rudders, a technical solution introduced at a general level, as known, only in the Middle Ages. Based on the ancient naval iconography, the use of this archaic central rudder is a fact confined chronologically to the VII-VI century BC and geographically to the only central-northern Adriatic Sea.

show abstract

The effects of changing solar activity on climate: contributions from palaeoclimatological studies

Cited by 40 publications

References 84 publications

Decadal oscillations of the aquatic chemistry of river waters in Latvia

Decadal oscillations of the aquatic chemistry of river waters in Latvia

Reduced Solar Activity Disguises Global Temperature Rise

La navigazione tardo-arcaica in Adriatico. l’iconografia navale e la peculiarità della tradizione nautica / Late-archaic navigation in the Adriatic sea. the naval iconography and the peculiarity of the nautical tradition

Contact Info

Product

Resources

About